mmf: K&R formatting cosmetics

Signed-off-by: Diego Biurrun <diego@biurrun.de>
avconv: use current syntax for the scale filter
af_asyncts: fix offset calculation

delta is in samples, not bytes. Also the sample format is not guaranteed
to be planar.

CC:libav-stable@libav.org
x86: sbrdsp: implement SSE2 qmf_pre_shuffle

From 253 to 51 cycles on Arrandale and Win64.
44 cycles on SandyBridge.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
indeo3: avoid writes without necessary alignment in copy_cell()

Cells starting at a position aligned to 8 pixels but wider than
4 blocks are copied with 3 blocks per loop. This creates problems on the
next loop iterations since the routine copying 2 blocks requires the
same alignment on some architectures like ARM NEON.
configure: Use enable_weak when enabling pic

This allows it to be overridden, either by the user on the command
line, or by other sections of the configure script.

Signed-off-by: Martin Storsjö <martin@martin.st>
configure: Explicitly disable PIC when targeting win32/mingw

These platforms do not have any notion of PIC. On some compilers,
enabling pic produces a number of warnings.

This avoids trying to produce PIC loads in the ARM assembly - there
are no relocation types in PE/COFF that correspond to
BFD_RELOC_32_PCREL (R_ARM_REL32 in ELF).

As a side-effect, this avoids enabling PIC on mingw64, getting rid
of the warnings about PIC not having any effect on that platform.

Signed-off-by: Martin Storsjö <martin@martin.st>
configure: Rename cmov processor capability to i686

The goal is to make the capapility slightly more general and have it
cover the availability of the nopl instruction in addition to cmov.
configure: x86: Only enable cpunop on i686

The assembler may insert nopl instructions for cpunop, which are not
(universally) supported on i586 CPUs.
x86: dsputil: Refactor pixels16 wrapper functions with a macro
x86: dsputil: Split inline assembly from init code

Also remove some pointless comments.
x86: dsputil: Rename dsputil_mmx.h --> dsputil_x86.h

The header is not (anymore) MMX-specific.
configure: Disable PIC for cygwin just as for win32/mingw

If this is explicitly disabled for win32/mingw, it should also
be disabled for cygwin, for consistency and for the same reasons
as for win32/mingw.

Signed-off-by: Martin Storsjö <martin@martin.st>
vc1dec: Use second_field instead of cur_field_type for deciding something

This change was done within the merge commit of the original
VC1 interlaced support in 0edf7ebcd67. Better commit message and
explanation appreciated.
vc1dec: fieldtx is only valid for interlaced frames

the fieldtx_plane is not cleared for interlaced fields

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
vc1dec: Don't attempt error concealment on field pictures

This is not implemented and doesnt work.
vc1: implement frame interlaced b-frame header parsing
vc1dec: interlaced B-frames
vc1dec: dont apply the loop filter on fields

Fixes read of uninitialized memory.
vc1dec: Fix destination pointers in context for fields

This replaces a large number of checks for the second field by
fixing the pointers when they are setup

This should also fix I/BI field pictures

Changes checksums for vc1_sa10143, the file becomes slightly closer
to what the reference decoder outputs

Based on "vc1dec: the second field is written wrong to the picture"
         by Sebastian Sandberg <sebastiand.sandberg@gmail.com>